11.42. Release 0.156

11.42. Release 0.156

Warning

Query may incorrectly produce NULL when no row qualifies for the aggregation
if the optimize_mixed_distinct_aggregations session property or
the optimizer.optimize-mixed-distinct-aggregations config option is enabled.

Improve performance of GROUPBY queries that compute a mix of distinct
and non-distinct aggregations. This optimization can be turned on by setting
the optimizer.optimize-mixed-distinct-aggregations configuration option or
via the optimize_mixed_distinct_aggregations session property.

Change default task concurrency to 16.

Hive Changes

Add support for legacy RCFile header version in new RCFile reader.

Redis Changes

Support iso8601 data format for the hash row decoder.

SPI Changes

Make ConnectorPageSink#finish() asynchronous.

Note

These are backwards incompatible changes with the previous SPI.
If you have written a plugin, you will need to update your code
before deploying this release.